Stephen Boyd fcc16882ac lib: atomic64: Initialize locks statically to fix early users ...

The atomic64 library uses a handful of static spin locks to implement
atomic 64-bit operations on architectures without support for atomic
64-bit instructions.

Unfortunately, the spinlocks are initialized in a pure initcall and that
is too late for the vfs namespace code which wants to use atomic64
operations before the initcall is run.

This became a problem as of commit 8823c079ba71: "vfs: Add setns support
for the mount namespace".

This leads to BUG messages such as:

  BUG: spinlock bad magic on CPU#0, swapper/0/0
   lock: atomic64_lock+0x240/0x400, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
    do_raw_spin_lock+0x158/0x198
    _raw_spin_lock_irqsave+0x4c/0x58
    atomic64_add_return+0x30/0x5c
    alloc_mnt_ns.clone.14+0x44/0xac
    create_mnt_ns+0xc/0x54
    mnt_init+0x120/0x1d4
    vfs_caches_init+0xe0/0x10c
    start_kernel+0x29c/0x300

coming out early on during boot when spinlock debugging is enabled.

Fix this by initializing the spinlocks statically at compile time.

Reported-and-tested-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-12-20 13:50:16 -08:00

..

lzo

lib: add support for LZO-compressed kernels

2010-01-11 09:34:04 -08:00

mpi

MPI: Fix compilation on MIPS with GCC 4.4 and newer

2012-11-23 18:57:17 +01:00

raid6

lib/raid6: build proper files on corresponding arch

2012-12-13 19:51:04 +11:00

reed_solomon

lib: Remove unnecessary inclusions of asm/semaphore.h

2008-04-18 22:17:17 -04:00

xz

XZ: Fix incorrect XZ_BUF_ERROR

2011-09-21 13:39:59 -07:00

zlib_deflate

zlib: slim down zlib_deflate() workspace when possible

2011-03-22 17:44:17 -07:00

zlib_inflate

inflate_fast: sout is already a short so ptr arith was off by one.

2010-03-12 15:52:44 -08:00

.gitignore

X.509: Implement simple static OID registry

2012-10-08 13:50:18 +10:30

argv_split.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

asn1_decoder.c

Nothing all that exciting; a new module-from-fd syscall for those who want

2012-12-19 07:55:08 -08:00

atomic64_test.c

atomic64_test: simplify the #ifdef for atomic64_dec_if_positive() test

2012-07-30 17:25:16 -07:00

atomic64.c

lib: atomic64: Initialize locks statically to fix early users

2012-12-20 13:50:16 -08:00

audit.c

audit: support the "standard" <asm-generic/unistd.h>

2011-05-04 14:41:28 -04:00

average.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

bcd.c

usb/core: use bin2bcd() for bcdDevice in RH

2012-09-10 11:13:16 -07:00

bch.c

lib: add shared BCH ECC library

2011-03-11 14:25:50 +00:00

bitmap.c

propagate name change to comments in kernel source

2012-12-06 10:39:54 +01:00

bitrev.c

lib: export bitrev16

2008-06-06 11:29:10 -07:00

bsearch.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

btree.c

btree: catch NULL value before it does harm

2012-06-07 14:43:55 -07:00

bug.c

bugs, x86: Fix printk levels for panic, softlockups and stack dumps

2012-01-26 21:28:45 +01:00

build_OID_registry

X.509: Implement simple static OID registry

2012-10-08 13:50:18 +10:30

bust_spinlocks.c

oops handling: ensure that any oops is flushed to the mtdoops console

2009-01-06 15:59:11 -08:00

check_signature.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

checksum.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

clz_tab.c

lib: Fix multiple definitions of clz_tab

2012-02-02 10:34:23 +11:00

cmdline.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

cordic.c

Docs: wording: functions -> algorithm

2011-10-29 21:20:22 +02:00

cpu_rmap.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

cpu-notifier-error-inject.c

cpu: rewrite cpu-notifier-error-inject module

2012-07-30 17:25:22 -07:00

cpumask.c

bootmem: fix wrong call parameter for free_bootmem()

2012-12-11 17:22:28 -08:00

crc7.c

CRC7 support

2007-07-17 10:23:04 -07:00

crc8.c

lib: crc8: add new library module providing crc8 algorithm

2011-06-03 15:01:06 -04:00

crc16.c

…

crc32.c

sections: fix const sections for crc32 table

2012-10-06 03:04:46 +09:00

crc32defs.h

crc32: select an algorithm via Kconfig

2012-03-23 16:58:38 -07:00

crc-ccitt.c

…

crc-itu-t.c

CRC ITU-T V.41

2007-05-10 18:24:13 +02:00

crc-t10dif.c

[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC

2008-07-12 08:22:32 -05:00

ctype.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

debug_locks.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

debugobjects.c

debugobjects: Fill_pool() returns void now

2012-04-18 13:38:48 +02:00

dec_and_lock.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

decompress_bunzip2.c

decompress_bunzip2: remove invalid vi modeline

2011-12-06 10:00:05 +01:00

decompress_inflate.c

decompressors: check input size in decompress_inflate.c

2011-01-13 08:03:25 -08:00

decompress_unlzma.c

treewide: Fix comment and string typo 'bufer'

2011-12-06 09:53:40 +01:00

decompress_unlzo.c

unlzo: fix input buffer free

2012-01-12 20:13:13 -08:00

decompress_unxz.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

decompress.c

lib/decompress.c add __init to decompress_method and data

2012-10-06 03:05:32 +09:00

devres.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

digsig.c

digsig: add hash size comparision on signature verification

2012-09-13 09:13:02 +08:00

div64.c

lib: correct link to the original source for div64_u64

2012-06-28 11:51:39 +02:00

dma-debug.c

dma-debug: fix to not have dependency on get_dma_ops() interface

2012-11-17 13:06:41 +01:00

dump_stack.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

dynamic_debug.c

lib: dynamic_debug: use kbasename()

2012-12-17 17:15:17 -08:00

dynamic_queue_limits.c

bql: Avoid possible inconsistent calculation.

2012-05-31 18:18:17 -04:00

earlycpio.c

lib: Add early cpio decoder

2012-09-30 18:02:20 -07:00

extable.c

module: trim exception table on init free.

2009-06-12 21:47:04 +09:30

fault-inject.c

fault-inject: avoid call to random32() if fault injection is disabled

2012-06-20 14:39:36 -07:00

fdt_ro.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_rw.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_strerror.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_sw.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_wip.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

find_last_bit.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

find_next_bit.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

flex_array.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

flex_proportions.c

lib/flex_proportions.c: fix corruption of denominator in flexible proportions

2012-09-25 08:59:21 -07:00

gcd.c

lib/gcd.c: prevent possible div by 0

2012-10-06 03:04:57 +09:00

gen_crc32table.c

sections: fix const sections for crc32 table

2012-10-06 03:04:46 +09:00

genalloc.c

genalloc: stop crashing the system when destroying a pool

2012-10-25 14:37:52 -07:00

halfmd4.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

hexdump.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

hweight.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

idr.c

idr: rename MAX_LEVEL to MAX_IDR_LEVEL

2012-10-06 03:04:56 +09:00

inflate.c

MN10300: Don't try and #include <linux/slab.h> in lib/inflate.c from bootloader

2010-08-12 09:51:35 -07:00

int_sqrt.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

interval_tree_test_main.c

random32: rename random32 to prandom

2012-12-17 17:15:26 -08:00

interval_tree.c

mm: interval tree updates

2012-10-09 16:22:40 +09:00

iomap_copy.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

iomap.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

iommu-helper.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

ioremap.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

irq_regs.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

is_single_threaded.c

kernel: is_current_single_threaded: don't use ->mmap_sem

2009-07-17 09:11:31 +10:00

jedec_ddr_data.c

ddr: add LPDDR2 data from JESD209-2

2012-05-02 00:04:06 -07:00

kasprintf.c

lib/kasprintf.c: use kmalloc_track_caller() to get accurate traces for kvasprintf

2012-10-11 08:50:15 +09:00

Kconfig

percpu_rw_semaphore: introduce CONFIG_PERCPU_RWSEM

2012-12-17 17:15:18 -08:00

Kconfig.debug

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

2012-12-18 09:58:09 -08:00

Kconfig.kgdb

mips,kgdb: kdb low level trap catch and stack trace

2010-05-20 21:04:26 -05:00

Kconfig.kmemcheck

kmemcheck: depend on HAVE_ARCH_KMEMCHECK

2009-07-01 22:28:44 +02:00

klist.c

Revert "driver core: check start node in klist_iter_init_node"

2012-04-19 19:17:30 -07:00

kobject_uevent.c

netlink: hide struct module parameter in netlink_kernel_create

2012-09-08 18:46:30 -04:00

kobject.c

kobject: fix the uncorrect comment

2012-05-07 16:51:19 -07:00

kstrtox.c

kstrto*: add documentation

2012-12-17 17:15:22 -08:00

kstrtox.h

lib/kstrtox: common code between kstrto*() and simple_strto*() functions

2011-10-31 17:30:56 -07:00

lcm.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

libcrc32c.c

libcrc32c: Fix "crc32c undefined" compilation error

2008-12-25 11:01:42 +11:00

list_debug.c

rcu: Fix broken strings in RCU's source code.

2012-07-06 06:01:49 -07:00

list_sort.c

lib/list_sort: test: check element addresses

2010-10-26 16:52:19 -07:00

llist.c

Disintegrate and delete asm/system.h

2012-03-28 15:58:21 -07:00

locking-selftest-hardirq.h

…

locking-selftest-mutex.h

…

locking-selftest-rlock-hardirq.h

…

locking-selftest-rlock-softirq.h

…

locking-selftest-rlock.h

…

locking-selftest-rsem.h

…

locking-selftest-softirq.h

…

locking-selftest-spin-hardirq.h

…

locking-selftest-spin-softirq.h

…

locking-selftest-spin.h

…

locking-selftest-wlock-hardirq.h

…

locking-selftest-wlock-softirq.h

…

locking-selftest-wlock.h

…

locking-selftest-wsem.h

…

locking-selftest.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

lru_cache.c

lru_cache: allow multiple changes per transaction

2011-10-14 16:47:45 +02:00

Makefile

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

2012-12-18 09:58:09 -08:00

md5.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

memory-notifier-error-inject.c

memory: memory notifier error injection module

2012-07-30 17:25:22 -07:00

memweight.c

string: introduce memweight()

2012-07-30 17:25:16 -07:00

nlattr.c

netlink: add minlen validation for the new signed types

2012-08-30 13:11:46 -04:00

notifier-error-inject.c

fault-injection: notifier error injection

2012-07-30 17:25:22 -07:00

notifier-error-inject.h

fault-injection: notifier error injection

2012-07-30 17:25:22 -07:00

of-reconfig-notifier-error-inject.c

powerpc+of: Rename and fix OF reconfig notifier error inject module

2012-12-14 10:32:52 +11:00

oid_registry.c

X.509: Add utility functions to render OIDs as strings

2012-10-08 13:50:18 +10:30

parser.c

lib/parser.c: avoid overflow in match_number()

2012-10-06 03:04:56 +09:00

pci_iomap.c

lib: add NO_GENERIC_PCI_IOPORT_MAP

2012-01-31 23:19:47 +02:00

percpu_counter.c

switch the protection of percpu_counter list to spinlock

2012-07-31 09:28:31 +04:00

percpu-rwsem.c

percpu_rw_semaphore: add lockdep annotations

2012-12-17 17:15:18 -08:00

plist.c

lib/plist.c: make plist test announcements KERN_DEBUG

2012-10-06 03:04:58 +09:00

pm-notifier-error-inject.c

PM: PM notifier error injection module

2012-07-30 17:25:22 -07:00

prio_heap.c

lib: fix sparse shadowed variable warning

2009-01-06 15:59:11 -08:00

proportions.c

locking, lib/proportions: Annotate prop_local_percpu::lock as raw

2011-09-13 11:11:50 +02:00

radix-tree.c

radix-tree: fix contiguous iterator

2012-06-05 10:46:40 -07:00

random32.c

prandom: introduce prandom_bytes() and prandom_bytes_state()

2012-12-17 17:15:26 -08:00

ratelimit.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

rational.c

lib: Change mail address of Oskar Schirmer

2012-05-17 15:18:37 +02:00

rbtree_test.c

random32: rename random32 to prandom

2012-12-17 17:15:26 -08:00

rbtree.c

rbtree: move augmented rbtree functionality to rbtree_augmented.h

2012-10-09 16:22:40 +09:00

reciprocal_div.c

sch_red: Adaptative RED AQM

2011-12-08 19:52:43 -05:00

rwsem-spinlock.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

rwsem.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

scatterlist.c

scatterlist: don't BUG when we can trivially return a proper error.

2012-12-17 17:15:28 -08:00

sha1.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

show_mem.c

arch, mm: filter disallowed nodes from arch specific show_mem functions

2011-05-25 08:39:03 -07:00

smp_processor_id.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

sort.c

generic swap(): lib/sort.c: rename swap to swap_func

2009-01-08 08:31:14 -08:00

spinlock_debug.c

lib/spinlock_debug: avoid livelock in do_raw_spin_lock()

2012-10-06 03:04:57 +09:00

stmp_device.c

lib: add support for stmp-style devices

2012-04-20 23:27:08 +02:00

string_helpers.c

lib/string_helpers.c: make arrays static

2012-05-29 16:22:32 -07:00

string.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

strncpy_from_user.c

word-at-a-time: make the interfaces truly generic

2012-05-26 11:33:40 -07:00

strnlen_user.c

lib: Fix generic strnlen_user for 32-bit big-endian machines

2012-05-27 20:59:46 -07:00

swiotlb.c

swiotlb: Do not export swiotlb_bounce since there are no external consumers

2012-10-30 09:32:07 -04:00

syscall.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

test-kstrtox.c

lib/test-kstrtox.c: mark const init data with __initconst instead of __initdata

2012-05-29 16:22:32 -07:00

textsearch.c

textsearch: doc - fix spelling in lib/textsearch.c.

2011-01-24 23:33:30 -08:00

timerqueue.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

ts_bm.c

textsearch: ts_bm: support case insensitive searching in Boyer-Moore algorithm

2008-07-08 02:37:54 -07:00

ts_fsm.c

textsearch: ts_fsm: return error on request for case insensitive search

2008-07-08 02:38:27 -07:00

ts_kmp.c

textsearch: ts_kmp: support case insensitive searching in Knuth-Morris-Pratt algorithm

2008-07-08 02:38:09 -07:00

uuid.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

vsprintf.c

simple_strto*: annotate function as obsolete

2012-12-17 17:15:22 -08:00